Mustard is a condiment made from the seeds of a mustard plant (white/yellow , Sinapis alba; brown/Indian , Brassica juncea; or black, Brassica nigra).
it is one of the oldest spices and one of the most widely used. More than 700 million lbs of seeds are consumed worldwide each year. Dry form is frequently used as a seasoning in mayonnaise, salad dressings, and sauces. . Brown and oriental mustards are also used as oilseed crops. However, the strong flavor of this high-protein oilseed has made it unpopular in the livestock feed and vegetable oil markets of North America. As a result, this produced in North America is used primarily as a spice or condiment.